Oh what a shame, it's so annoying when good work doesn't turn out quite as expected! You could experiment with different glass pieces (I don't know if construction glass panels have the same effects as barrier glass for instance) and with light placement / type / direction. But if it turns out to be unfixable I'd suggest taking some screenshots from inside the habitats as well as the exteriors to showcase the animals and habitat design. Still a week to go
I'm just at the point of adding lighting to mine so I'll let you know if I figure anything helpful out. I'm done for today...finally got my ceilings and roof on, which took a while... but will work on it tomorrow and let you know.